The International Alliance to Combat Ocean Acidification (OA Alliance) brings together governments and organizations across the globe dedicated to taking action to protect coastal communities and livelihoods from the threat of ocean acidification. Together, OA Alliance members are:

Many governments around the world are gathering scientific information regarding ocean acidification. More remains to be understood and more investment in scientific inquiry is critical, and in addition, it is becoming increasingly urgent to take action.

The OA Alliance supports its members in the development of their OA Action Plans which describe real, tangible actions governments will take to respond to the threat of ocean acidification. For example, Washington State released a series of 42 recommendations for actions, including reducing carbon emissions and local land-based contributions to ocean acidification, investing in adaptive measures in partnership with local shellfish companies, and developing predictive forecasting models. A few national OA Alliance members have launched regional vulnerability assessments to inform the development of OA Action Plans that best protect identified at-risk species.

The OA Alliance gives each member an OA Action Plan development toolkit, shares resources and showcases expertise and experiences of members through webinars, technical information exchanges, and through in-person meetings and phone consultations.